DE3414567A1 - Chopping-type hammer mill for crushing material - Google Patents

Abstract

With the invention, a chopping-type hammer mill for crushing material is provided. This chopping-type hammer mill has a rotor around whose axis of rotation radial beaters are arranged, which, by means of rotation, form a, preferably elongate, rotation body about the axis of rotation. The rotor rotates in a housing with an inlet opening and an outlet opening. Between the rotor and the outlet opening, tearing and/or chopping elements are arranged at a distance from the rotor over an angular region which extends from the, in the direction of rotation of the rotor, downward-movement end of the inlet opening in the direction of rotation of the rotor as far as the region of the outlet opening. In addition, a material flow blocking element is arranged between the, in the direction of rotation, downward-movement end of the outlet opening and the, in the direction of rotation of the rotor, upward-movement end of the inlet opening. The material to be crushed is fed to the rotor via the inlet opening, crushed by the beaters, further crushed by the tearing and/or chopping elements and discharged outwards through the through-openings between the tearing and/or chopping elements and the housing and the tearing and/or chopping elements via the outlet opening.

Description

DESCRIPTION

The invention relates to an impact cutting mill for comminuting Materials, with a rotor, around its axis of rotation arranged radially beater are, which form a preferably elongated body of revolution around the rotor axis, and which rotates in a housing having an input and an output port, wherein the materials to be shredded are fed to the rotor via the input opening, from smashed with the rackets and dispensed through the dispensing opening.

For shredding a wide variety of materials, such as of chemicals, dyes, minerals, wood shavings, waste paper, cellulose, vegetable and animal waste, etc., are hammer mills of various designs known. These hammer mills include a rotor that rotates in a housing. Around the axis of rotation of the rotor are radially arranged beaters, which by rotation form a, preferably elongated, body of revolution around the rotor axis.

The housing has an inlet and an outlet opening, and the to Comminuting materials are fed from the rotor via the inlet opening smashed the racket and released through the outlet. The thugs that Also known as hammers, they can be suspended movably on the rotor or rigidly attached to the rotor and designed blunt or knife-like. Between the Rotor and the outlet opening is in each case a sieve, as this is for the functioning of the hammer mill is essential. There are hammer mills where a so-called "Vorrost" is arranged in the inlet. However, this "pre-rust" is not permeable grate but only includes one for the grate to be crushed materials impermeable arcuate around the by the rotation the club formed rotation body running base on which "grate-like" Increases are provided. Such a "pre-grate" is only used to remove chunky Pre-shred materials without these materials coming through the "pre-grate" can step outside the range of action of the racket. This "pre-rust" closes then the sieve that is always present in a hammer mill, which is only one Exit of the crushed materials from the area of action of the bat enables. This indispensable screen forms an intermediate element that controls the flow of material inhibits, so that an additional force is required which the material additionally promotes centrifugal force through the sieve. This power is particular in the case of light materials, a suction force that is downstream in the direction of material flow must be applied by the sieve. This is especially true for such light materials as there are cellulose hygiene articles which are rejected during manufacture, in particular of pant diapers, sanitary napkins, bed mats with covers such as plastic films, Tissue, adhesive tape, rubber bands or the like.

accrue and which are preferred, but by no means exclusively, with the impact cutting mill according to the invention are to be comminuted.

The present invention is therefore intended to provide an impact cutting mill made available of the type mentioned for the comminution of materials at which the material flow of the material to be shredded and the material to be conveyed only in a single direction with smashing and / or cutting the material takes place without being hindered by a sieve, the conveying material is preferably air.

This is achieved according to the invention that between the rotor and the dispensing opening tear and / or cutting elements, in particular knife-shaped Cutting elements and / or tooth-like tear elements are arranged, which have a a predetermined angular range of the rotor circumference are provided at a distance from the rotor, wherein this angular range differs from the downward movement in the direction of rotation of the rotor End of the inlet opening in the direction of rotation of the rotor up to the area of the outlet opening, preferably extends over the full cross section, and between the in the direction of rotation of the rotor movement downstream end of the outlet opening and the in the direction of rotation of the rotor movement upstream end of the inlet opening a Material flow barrier is arranged.

This impact granulator makes it possible without any sieve, in particular do without a sieve between the rotor and the dispensing opening, so that in the impact cutting mill according to the invention on the application of an additional suction power, the crushed material in addition to the centrifugal force exerted by the rotor conveyed through such a sieve, can be dispensed with, since the with According to the invention, the elimination of the sieve resulted in a substantial inhibition of the flow of material in the direction of the dispensing opening, which is also referred to as the outlet opening, is omitted.

AuBeraem is caused by the material flow barrier, which is between the in the direction of rotation of the rotor downward movement end of the outlet opening and that in the direction of rotation of the rotor is located upstream of the inlet port, prevents particles of the comminuted material from the input opening, also known as the inlet opening is to step out. When the material to be shredded in the impact granulator through the club is rotated, then material particles are also in the area of the inlet opening bounce off the housing walls and avoid the impact force in the inlet opening Sci'neicmile existing material flkl3, from the inlet to rotor In of since runs to the outlet opening, emerge from the inlet opening.

Through this material flow barrier for the to be shredded as well as whole or partially shredded material and the air serving as the conveying material, As a result, a counter material flow is switched off, which reduces the material throughput by the impact cutting mill and reduce the performance of this impact cutting mill would degrade. The material flow of the material to be shredded and the material to be conveyed so actually only takes place in one of the impact cutting mills according to the invention single direction, namely in the desired throughput direction.

Depending on the intended embodiment, in the inventive Impact cutting mill the mallets are movably suspended in the rotor, the mallets but can also be suspended rigidly in the rotor, and finally it is also possible that the beaters are partly movable and partly rigidly suspended in the rotor, d. H. that part of the racket is movable and the rest of the racket is rigid is hung.

The rackets themselves can be made of flexible material, in particular spring steel or flexible plastic, so that an advantageous elastic Process of breaking up the materials to be shredded in the impact cutting mill is achieved.

To further the effect of dividing or cutting up the to be shredded Improving materials through the racket can put the racket on their side of action sharp-edged, preferably knife-like, on the leading edge and on the head side, be trained.

The material flow barrier can be designed in the most varied of ways; particularly preferred embodiments are as follows: (a) One structurally simple and nevertheless very effective embodiment results when the material flow barrier by means of one or more wall elements, in particular by means of one or more metal sheets, which are parallel to the axis of rotation of the Rotor at the smallest possible distance from the rotational body formed by the SchlCitTer and are preferably arranged radially to the rotor.

(b) It is still possible to use the material flow barrier directly to form the wall of the housing of the rotor by placing this wall between the direction of rotation of the rotor downstream end of the outlet opening and that in the direction of rotation of the rotor upstream end of the inlet opening at the smallest possible distance is arranged by the body of revolution formed by the racket.

(c) Finally, there is another structural option, the material flow barrier to make particularly effective, in that the material flow barrier by means of a or several in the form of a comb protruding into the body of revolution formed by the racket Wall elements, in particular by means of one or more comb-like metal sheets, formed is, the comb teeth each in the axial spaces between the individual Rackets intervene.

A frontal material flow barrier and an improvement in the material flow and / or further advantages can be achieved in that at both axial ends of the rotor in the area of the center of rotation through openings or

-channels for supplying or removing a fluid or fluid mixture or a fluidized substance or a fluidized substance mixture in the or from the sphere of activity the rackets are arranged, wherein the cross section of the passage openings or channels is preferably adjustable is. A particularly simple and advantageous structure results in this case when the rotor shaft is tubular and the passage openings or channels are formed by the open pipe ends or the rotor shaft and through Nozzles, radial bores or the like, which are preferably over the entire width of the rotor are arranged away in the rotor shaft, in those formed by the rotation of the rotor The bodies of revolution open up.

These passage openings or channels can in particular be in the following Ways to be used: (1) Air can pass through the passage openings or channels blown into the body of revolution formed by the rotation of the rotor or be sucked in. This additionally blown or sucked in air causes in Connection with the rest of the material flow in the area of the inlet opening for the to crushing materials create a suction on the front sides of the rotor and the the adjoining housing wall prevents undesired counter-flow of material, thus acts like a material flow barrier.

(2) Inert gases, z. B. carbon dioxide, nitrogen, etc., introduced into the housing, in particular blown which prevent a fire in the housing by removing the air from the housing push away.

(3) Liquefied gases can pass through the passage openings or channels for deep-freezing and thus for embrittling plastic and / or rubber or caoutchouc components the materials to be comminuted are introduced, in particular blown in.

(4) Additives can pass through the passage openings or channels are introduced for the purpose of adding them to the materials to be shredded, the formation of the mentioned nozzles through which the passage openings or channels open into the body of revolution formed by the rotation of the rotor can, an excellent mixing of the additives, e.g. 3. Water with the material to be shredded results.

(5) Finally, by means of the passage openings or channels Very fine particles are sucked out of the housing via the rotor shaft, and not only a small particle size but also a lower specific weight than have the remaining materials that should not be extracted via the rotor shaft.

In principle, the inlet and outlet openings can be practically any in the direction of rotation of the rotor successively around the circumference of the rotor in the housing be provided. However, it has been shown that the influence of gravity on the crushing effect of the impact cutting mill according to the invention is not inconsiderable is. Therefore, there is a regarding the arrangement of the inlet port and the Outlet opening to be particularly preferred because it is special in its crushing effect powerful impact cutting mill according to the invention when used as an inlet opening the exit cross-section of a horizontal feed channel and as an outlet opening the inlet cross-section of a horizontal discharge channel are provided, wherein the inlet and outlet openings are preferably arranged in alignment with one another.

Because the force of gravity causes a deformation of the uM Æe'n5to ~ 'tor material ring running around in the direction of the vertical downwards. Through this has when the supply and discharge channels are horizontal and in alignment with one another are arranged, the material located in the material ring in the area of the tear and / or Cutting elements have a higher material or material density, which has the consequence that the c; r of the reduction is improved. As an example it should be given that it is proportionate fine material such as B.

Sanitary napkins or cutting scraps from panty liner production, which z. B. in relation to pant diapers or bed liners a small piece of material size have and of a specific embodiment of a hammer cutting mill with vertical material feed and discharge only comminuted in an unsatisfactory manner with horizontal or almost horizontal material feed and discharge with the same impact granulator with the same size and arrangement of the shredding and / or cutting elements are smashed satisfactorily.

Finally, for the sake of completeness, it should be noted that that of course the choice of tearing and / or cutting elements and their arrangement in relation to each other as well as in relation to the rotor to the desired degree of comminution and matched to the type and size of the material that has not yet been shredded have to be. In a corresponding manner, the gap at the beginning of the predetermined Angular range within which the tearing and / or cutting elements are arranged and the surface through the jacket of the rotating body and the opposite housing inner wall is formed, to the desired degree of shredding and the type and size of material must be matched to the materials that have not yet been shredded.

It goes without saying that the tearing and / or cutting elements are preferred at least partially adjustable, in particular with regard to their distance from the rotor and their angle with respect to the rotor axis, thus the degree of comminution and the The direction of flow of the comminuted material can be influenced or adjusted accordingly are.

The impact cutting mill according to the invention is of the most varied for shredding Materials suitable; it is particularly, but by no means exclusively, suitable for the shredding of cellulose hygiene articles, which are considered to be rejects the production of pant diapers, sanitary napkins, bed liners, bed pads with wrappings such as plastic sheeting, tissue, adhesive strips, rubber bands or the like, attack.

See below for a more complete understanding of the invention some shown in principle in FIGS. 1 to 11 of the drawing, particularly preferred Embodiments of the invention explained in more detail; The figures show: FIG. 1 a section, partly in side elevation view through a first embodiment of a hammer cutting mill according to the invention; FIG. 2 shows schematic sectional views through others through 8 Embodiments of impact cutting mills according to the invention, which in principle Embodiment according to FIG. 1 correspond, however, the inlet opening or the Feed channel for the material to be shredded at a different point the circumference of the rotor is arranged, while the position of the outlet opening or

the discharge channel for the shredded material is retained, in such a way that the shredded material is discharged vertically downwards, although these impact granulators are also in positions other than those in the drawing shown, can be set up in practice; Fig. 9 is a section through a Impact cutting mill of the type shown in FIG. 5 in an enlarged compared to FIG. 5 View with the ring of material forming around the rotor and through the Gravity is deformed so that it is not concentric with the rotor; Fig. 10 shows a section through an embodiment of a hammer cutting mill, which in principle corresponds to the embodiment of FIG. 9, but with the supply and discharge channel are arranged horizontally and are flush with each other, so that the around the rotor formed ring of material lies optimally in the area of the tear and / or cutting elements; and Fig. 11 is a sectional view, partly taken from above, from the inlet port a rotor and the associated housing walls of a hammer cutting mill, in which Air is supplied through a tubular shaft and through holes in the area of the Rotation body is released.

In all figures of the drawing are similar or corresponding Components are largely given the same reference numerals and therefore, if nothing Differing is said, explained by the preceding description.

Reference is first made to FIG. 1, which shows a first embodiment a hammer cutting mill for shredding materials in a sectional view, shows partially in side elevation. This impact granulator has a Rotor 1, around whose axis of rotation 2 beaters 3 are arranged radially. These thugs form an elongated body of revolution due to their rotation about the axis of rotation 2 4. The rotor 1 is arranged in a housing 5, which has an inlet opening 6 and a Outlet opening 7 has. The direction of rotation of the rotor 1 is indicated by an arrow 8.

Tearing and / or cutting elements are located between the rotor 1 and the outlet opening 7 9 arranged. In fact, these tearing and / or cutting elements 9 are above a predetermined one Angular range i of the rotor circumference is provided at a distance from the rotor 1. This angular range cc extends from the downward movement in the direction of rotation 8 of the rotor 1 End 10 of the inlet opening 6 in the direction of rotation 8 of the rotor 1 to the area of the outlet opening 7. In the present case, the predetermined angular range extends d, as can be seen from Fig. 1, to about half the cross section of the outlet opening 7. However, it can also extend over their full cross-section or over one smaller part of the cross section.

Between the downward movement in the direction of rotation 8 of the rotor 1 End 11 of the outlet opening 7 and the upward movement in the direction of rotation 8 of the rotor 1 At the end 12 of the inlet opening 6, a material flow barrier is arranged, which in the present case is formed by a sheet 13 and a sheet 14, both of which are parallel to the axis of rotation 2 of the rotor 1 at the smallest possible distance from that caused by the rotation of the club 3 formed rotary body 4 and are arranged radially to the rotor 1, wherein the a plate 13 at the end 11 downstream of the movement in the direction of rotation 8 of the rotor 1 the outlet opening 7 is provided, while the other plate 14 is on in the direction of rotation 8 of the rotor 1 upstream end 12 of the inlet opening 6 is arranged.

When the impact cutting mill is in operation, the materials to be shredded are 15, which are indicated by an arrow, the rotor 1 via the inlet opening 6 fed, smashed by the beaters 3 and released via the outlet opening 7, these materials, the tearing and / or cutting elements 9 before or during their Entry into the Let opening 7 pass and from these theirs Experience final shredding to the desired degree of shredding.

The crushed materials 16, which are shown in Fig. 1 by two arrows, are indicated by an arrow in each of the other figures, are indicated by the Outlet opening 7 discharged to the outside.

The beaters 3 are movably arranged on a main rotor part 17, which is firmly connected to the rotor shaft 18. This racket 3 can for example elongated bodies, e.g. B. rods made of an impact-resistant material, such as made of steel. The rackets 3 are each by means of a racket suspension 19, which enables a relative movement between the beaters 3 and the main rotor part 17, attached to the latter. This racket suspension 19 can be attached to each racket 3 or be attached to a group of clubs 3 drive pins, the preferably runs parallel to the axis of rotation of the main rotor part 17 and around it Axis the racket 3 or the group of rackets 3 can rotate freely. It is also possible to design the racket suspension 19 as a racket joint, with either each individual racket 3 or a group of several rackets 3 such Club joint may have whose joint axis is preferably parallel to the axis of rotation 2 is. The club joints can also be designed as ball joints or other joints be that allow pivoting in multiple directions. While according to Fig. 1 the beaters 3 are movably suspended in the rotor 1, it is a deviation from this also possible to hang the beater 3 rigidly in the rotor 1, or a part of the Racket 3 can be moved and the other part of racket 3 can be suspended rigidly in rotor 1.

The rackets 3 can also be made of flexible material, in particular made of spring steel or flexible plastic, and they can be on their Effective side on the leading edge 20 and on the head side 21 sharp-edged, preferably knife-like, be executed.

As Fig. 1 and also Figs. 2 to 10 clearly show, are the tearing and / or cutting elements 9 in the circumferential direction of the rotating body 4 spaced so that therebetween and between them and the housing in the area of the outlet opening 7 through openings 22 are present, which in contrast to a sieve no substantial inhibition of the flow of material towards the Form outlet opening.

In the present embodiments, the axis of rotation runs 2 of the rotor 1 parallel to the planes of each a cross section through the inlet opening 6 and the outlet opening 7, but the axis of rotation 2 can also be a different one Have alignment.

Although the material flow barrier in the embodiment of FIG. 1 of two sheets 13 and 14 is formed, it may also be sufficient if only one of these Sheet metal is present, z. B.

the sheet 13, which is on the downward movement in the direction of rotation 8 of the rotor 1 End 11 of the outlet opening 7 is located. Instead of one of these sheets or instead both sheets 13, 14 can generally wall elements such as plates, strips or the like., be provided that are made of a material other than metal, such as made of plastic.

It is also possible that the wall 23 of the housing 5, which is between that in the direction of rotation 8 of the rotor 1 upward movement end 12 of the inlet opening 5 and the end 11 downstream of the movement in the direction of rotation 8 of the rotor the The outlet opening 7 extends at the smallest possible distance from the rotating body 4 is arranged so that this wall itself acts as a material flow barrier.

In Fig. 1a, a further possibility is indicated, such as a material flow barrier can be formed. The fig.

1a shows only part of the rotor 1, seen in the direction of arrow 24 in FIG. 1. Here the material flow barrier is from a wall element 25 formed, which, as Fig. 1a clearly shows, like a comb in the by the racket 3 formed rotary body 4 protrudes so that the comb teeth 26 each into the engage axial spaces between the individual clubs 3.

Of course, similar to that shown in FIG Material flow barrier several such comb-like wall elements 25 are provided and made Sheet metal, plastic or the like. Be made.

FIGS. 2 to 8 show various arrangements of the inlet opening 6 relative to the outlet opening 7, the position of the outlet opening 7 being perpendicular leading downward and maintained the position of the inlet port 6 around the circumference of the Rotor 1 or the rotary body 4 has been changed around. Figs. 2 and 3 show the two extreme relative positions between inlet opening 6 and outlet opening 7. In the one extreme relative position shown in FIG. 2, this occurs in the direction of rotation 8 of the rotor 1 downward movement end 10 of the inlet opening 6 with the direction of rotation 8 of the rotor 1 moving upstream end of the outlet opening 7 together. In the in In contrast, the other extreme relative position shown in FIG. 3 falls in the direction of rotation 8 of the rotor 1 upstream end 12 of the inlet opening 6 with the in the direction of rotation 8 of the rotor 1 downstream end 11 of the outlet opening 7 together. In this the latter case forms the rotor-side end 27 of the partition 28 between the inlet opening 6th and the outlet opening 7 a material flow barrier.

In the embodiment of FIGS. 4 and 5, these are the inlet port 6 having inlet channel 29 and the outlet channel having the outlet opening 7 30 arranged in alignment with one another, the cross-section in FIG. 4 being both of the inlet channel 29 and the outlet channel 30 over the entire cross-sectional area of the rotating body 4, while in Fig.

5 the cross section of the inlet channel 29 is only half of the cross section of the outlet channel 30 is. In the embodiment according to FIG. 4, both in the direction of rotation 8 of the rotor 1 downward movement end 10 of the inlet opening 6 with the end of the outlet opening which is upward in the direction of rotation 8 of the rotor 1 7 together as well as the upward movement in the direction of rotation 8 of the rotor 1 End 12 of the inlet opening 6 with the downward movement in the direction of rotation 8 of the rotor 1 End 11 of the outlet opening 7. In contrast, in the embodiment according to FIG the downstream end 10 of the inlet opening in the direction of rotation 8 of the rotor 1 with the upstream end in the direction of rotation 8 of the rotor 1 in the outlet opening 7 together, but that is in the direction of rotation 8 of the rotor 1 upward movement End 12 of inlet opening 6 removed by 90C (based on the circumference of the rotating body) from the downstream end 11 of the outlet opening in the direction of rotation of the rotor 1 7th

Figures 6, 7 and 8 show intermediate positions in the arrangement of the inlet port 6 relative to the outlet opening 7 between the two extreme relative positions of the Fig.

2 and 3. In these embodiments as well as in the embodiments 1, 3 and 9, the inlet channel 29 opens in the direction of rotation 8 of the rotor 1 downward movement end 10 of the inlet opening 6 in each case tangentially to the Rotation body 4 in the rotation body. In the embodiment according to FIG. 2 opens the inlet channel 26 at an acute angle to the tangential direction of the rotating body 4 at the downstream end 10 of the inlet opening 6 in the rotating body 4. The Outlet channel 30 is designed in all embodiments so that it is on in the direction of rotation 8 of the rotor 1 upstream end of the outlet opening 7 tangential or nearly tangential or at an acute angle to the tangential direction to the rotational body 4 of the latter is led away.

It will now be discussed in more detail on FIGS. 9 and 10, in which the material ring is indicated, which is in the operation of the impact cutting mill around the rotary body 4 forms around, and which is deformed by gravity so that it is in the Direction of action of gravity g (see the two arrows labeled g in the Fig.

9 and 10) has a greater radial thickness than in the opposite direction, the radial thickness gradually increasing from the opposite direction to the direction of gravity g increases; this material ring is denoted by 31 and indicated by dashed lines. if Now, as shown in Fig. 9, the inlet channel 29 and the outlet channel 30 perpendicular run, then there is only a part of the radially thicker area of the material ring 31, in which there is a higher material density, in the area of the tear and / or Cutting elements 9, which is a less than optimal use of gravity g caused deformation of the material ring 31 means. Such an optimal exploitation is present in the embodiment of a hammer cutting mill according to FIG which the inlet channel 29 and the outlet channel 30 are horizontal and in alignment with one another run, with the downward movement in the direction of rotation 8 of the rotor 1 End 10 of the inlet opening 6 is at a height above the lower end 32 of the Ro- tation body 4 is located. Preferably, the downstream End 10 can be arranged at the level of the axis of rotation 2, although in FIG. 10 the downstream end 10 is located at an intermediate level. It should also be mentioned that in the embodiment according to FIG and the outlet channel 30 do not necessarily have to be aligned with one another in order to be optimal To achieve crushing effect, because the inlet channel 29 can also be inclined after directed downwards or at the downstream end 10 tangential to the rotation body 4 run. It is essential that the predetermined angular range is in the middle or approximately lies in the middle of the radially thickened area of the material ring 31.

Finally, FIG. 11 shows an embodiment of a hammer cutting mill shown, with the at both axial ends 33 and 34 in the area of the rotation center Passage openings or channels 35 and 36 are arranged. To that end is the rotor shaft 18 is tubular. The passage openings are of the open pipe ends of the rotor shaft 18 and formed by the tubular design the rotor shaft in this formed axial channel up to nozzles, radial bores or the like 37 continued. These nozzles, radial bores or the like 37 are in the present Embodiment across the entire width of the rotor 1 in the rotor shaft 18 arranged.

As has already been explained in detail above, the passage openings or channels 35, 36, 37 are used for a wide variety of purposes. Let it be here in order to avoid repetition, only briefly discussed the case that they are used for feeding of air in the area of the rotating body formed by the rotation of the rotor 1 be used. The air flow through the additional means of the passage openings respectively.

-channels 35, 36 and 37 is effected air quantities supplied is in 11 indicated by arrows. This air also provides funding for the materials to be shredded supplied, and the additional amount of air supplied can be set, although this is not shown in the drawing, that the cross-section of the passage openings or channels made adjustable is.

Claims (12)

BERT STEFFENS ANDERNACH Impact Cutting Mill for shredding materials PATENT CLAIMS Impact cutting mill for shredding materials, with a rotor, around the axis of rotation are arranged radially rackets, which by rotation form a, preferably elongated, body of revolution around the rotor axis, and the rotates in a housing with an inlet and an outlet opening, the to crushing materials fed to the rotor via the inlet port, from the beater be smashed and discharged through the outlet opening, thereby g e k e n n -z e i c h n e t that between the rotor (1) and the outlet opening (7) tear and / or Cutting elements (9), in particular knife-shaped cutting elements (9) and / or tooth-like tear elements (9) are arranged, which over a predetermined Angular range (sQ) of the rotor circumference are provided at a distance from the rotor (1), wherein This angular range (i) differs from the downward movement in the direction of rotation (8) of the rotor (1) End (10) of the inlet opening (6) in the direction of rotation (8) of the rotor (1) into the The area of the outlet opening (7), preferably up to its full cross-section, and wherein between the downward movement in the direction of rotation (8) of the rotor (1) End (11) of the outlet opening (7) and the one in the direction of rotation (8) of the rotor (1) upstream end (12) of the inlet opening (6) a material flow barrier (13, 14; 25) is arranged. 2. Impact cutting mill according to claim 1, characterized in that g e -k e n n z e i c h n e t that the tearing and / or cutting elements (9) on the lower peripheral area of the rotational body (4) formed by the rotation of the racket (3), in particular distributed over the lower half to the lower third of the circumferential area of the rotating body (4), are arranged. 3. impact cutting mill according to claim 1 or 2, characterized g e k e n n z e i c h n e t that the beaters (3) are movably suspended in the rotor (1). 4. Impact cutting mill according to claim 1 or 2, characterized in that g e k e n n z e i c h ne t that the beaters (3) are rigidly suspended in the rotor (1). 5. impact cutting mill according to claim 1 or 2, characterized g e k e n n z e i c h n e t that the beaters (3) in the rotor (1) are partially movable and partially are rigidly suspended. 6. Impact cutting mill according to one of claims 1 to 5, characterized in that g e k e n n n n e i n e t that the racket (3) made of flexible material, in particular Spring steel or flexible plastic are formed. 7. Impact cutting mill according to one of claims 1 to 6, characterized in that g It is not shown that the strikers (3) are leading on their side of action Edge (20) and on the head side (21) sharp-edged, preferably knife-like are. 8. Impact cutting mill according to one of claims 1 to 7, characterized in that g e k e n n n n e i c h n e t that the material flow barrier by means of one or more Wall elements, in particular by means of one or more metal sheets (13, 14) is parallel to the axis of rotation (2) of the rotor (1) at the smallest possible distance from the rotation body (4) formed by the rotation of the racket (3) and are preferably arranged radially to the rotor (1). 9. Impact cutting mill according to one of claims 1 to 7, characterized in that g e k e n n n z e i c h n e t that the material flow barrier by means of the wall (23) of the Housing (5) of the rotor (1) is formed by placing the same between the direction of rotation (8) of the rotor (1) downstream end (11) of the outlet opening (7) and the im Direction of rotation (8) of the rotor (1) upstream end (12) of the inlet opening (6) at the smallest possible distance from that formed by the rotation of the clubs (3) Rotary body (4) is arranged. 10. Impact cutting mill according to one of claims 1 to 7, characterized it is not noted that the material flow barrier by means of one or more like a comb in the rotational direction formed by the beaters (3) body (4) protruding wall elements (25), in particular by means of one or more comb-like metal sheets, the comb teeth (26) each in the axial Intervene the spaces between the individual clubs (3). 11. Impact cutting mill according to one of claims 1 to 10, characterized it is noted that at both axial ends (33, 34) of the rotor (1) in the area of the center of rotation through openings or channels (35, 36) for feeding or discharging a fluid or fluid mixture or a fluidized substance or a fluidized substance mixture into or out of the area of action of Rackets (3) are arranged, the cross section of the passage openings or channels is preferably adjustable. 12. Impact cutting mill according to claim 11, characterized in that g e -k e n n z e i c h n e t that the rotor shaft (18) is tubular and the passage openings respectively. -channels (35, 36) from the open pipe ends or the rotor shaft (18) are formed and by nozzles, radial bores o. The like. (37), which are preferably Arranged over the entire width of the rotor (1) in the rotor shaft (18) open into the rotating body (4) formed by the rotation of the rotor (1).